| 摘要 |
PROBLEM TO BE SOLVED: To provide a reactor device having an inductance of more than a prescribed value for an input current changing in a wide range. SOLUTION: This reactor device L1 includes a core 2, a main coil 3, a sub coil 4, and a switch 5. The main coil 3 and the sub coil 4 are wound around the core 2. The main coil 3 is connected between a node N1 and a node N2. The sub coil 4 is connected between the switch 5 and the node N2. The switch 5 is connected between the node N1 and one end of the sub coil 4. The switch 5 is turned on when DC current passing through the main coil 3 is above more than a reference value which saturates magnetic flux generated in the core 2 by the DC current passing through the main coil 3, and the sub coil 4 is connected in parallel to the main coil 3. COPYRIGHT: (C)2004,JPO&NCIPI
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